Malicious PDF — malware analysis report

Static analysis result for SHA-256 34eaa6d4ad5b94cc…

MALICIOUS

PDF

86.3 KB Created: 2020-12-31 19:04:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f78fbdade904d24a722073b00c105298 SHA-1: ebf453a7f7ebdf5ba4e2d1e463dc47ad778287db SHA-256: 34eaa6d4ad5b94cc7d537dc5cc51a7050b56d05e371efaacd0ca956d76b05459
222 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The document contains a large number of embedded URLs, suggesting a link farm or phishing attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier output strongly indicate a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gettraff.ru/strik?utm_term=share+chat+status+video+malayalam+songs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412895/normal_5fbbeff31db41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443337/normal_5fbc46f41d328.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480758/normal_5fd6268ab40c4.pdfIn PDF document text
    • https://dotomogef.weebly.com/uploads/1/3/4/7/134760479/5626048.pdfIn PDF document text
    • https://cdn.sqhk.co/fijajiles/ibibq6n/96191362495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381730/normal_5f996d42d2905.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/iilB8ha/stick_cricket_super_league_division_1_final.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393647/normal_5fe7676a33585.pdfIn PDF document text
    • https://xiravitufe.weebly.com/uploads/1/3/4/4/134438949/822546.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390371/normal_5fa99c4e48b34.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujonad/gefOjeO/kujowibidesuduvu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1CB 5500 bytes
SHA-256: f09930a22ebac63a296ba66a5e7dc9de9388d78e1113ed2feb551df48203715e
font_01_sfnt_off0000d459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD459 9928 bytes
SHA-256: 1c6f5b8b4774fdcee2c533284226de2f41d8d0a1518665be2146f499400a666a
font_02_sfnt_off0000eed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED5 4028 bytes
SHA-256: bc49a84eb625df7ed11ae137af6e35ddfa79a37c361bf286e1d689d88c63e9e5
font_03_sfnt_off0000feb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB8 12004 bytes
SHA-256: 4b6ab68daf13ba1fc6ff82533943966fdc8379b1d460d2ea731103e12745fbfd
font_04_sfnt_off0001261a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1261A 16756 bytes
SHA-256: ec4e01bddcccca99ed43bd0ce4a655a00b21d54b202e678c34dc47c15c76a4ee
font_05_sfnt_off00013d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D39 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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